A new security update has been released for Gentoo Linux - Adobe Reader: User-assisted execution of arbitrary code. Here the announcement:

Gentoo Linux Security Advisory GLSA 200901-09
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http://security.gentoo.org/
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Severity: Normal
Title: Adobe Reader: User-assisted execution of arbitrary code
Date: January 13, 2009
Bugs: #225483
ID: 200901-09

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Synopsis
========

Adobe Reader is vulnerable to execution of arbitrary code.

Background
==========

Adobe Reader (formerly Adobe Acrobat Reader) is a closed-source PDF
reader.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-text/acroread < 8.1.3 >= 8.1.3

Description
===========

* An unspecified vulnerability can be triggered by a malformed PDF
document, as demonstrated by 2008-HI2.pdf (CVE-2008-2549).

* Peter Vreugdenhil, Dyon Balding, Will Dormann, Damian Frizza, and
Greg MacManus reported a stack-based buffer overflow in the
util.printf JavaScript function that incorrectly handles the format
string argument (CVE-2008-2992).

* Greg MacManus of iDefense Labs reported an array index error that
can be leveraged for an out-of-bounds write, related to parsing of
Type 1 fonts (CVE-2008-4812).

* Javier Vicente Vallejo and Peter Vregdenhil, via Zero Day
Initiative, reported multiple unspecified memory corruption
vulnerabilities (CVE-2008-4813).

* Thomas Garnier of SkyRecon Systems reported an unspecified
vulnerability in a JavaScript method, related to an "input validation
issue" (CVE-2008-4814).

* Josh Bressers of Red Hat reported an untrusted search path
vulnerability (CVE-2008-4815).

* Peter Vreugdenhil reported through iDefense that the Download
Manager can trigger a heap corruption via calls to the AcroJS
function (CVE-2008-4817).

Impact
======

A remote attacker could entice a user to open a specially crafted PDF
document, and local attackers could entice a user to run acroread from
an untrusted working directory. Both might result in the execution of
arbitrary code with the privileges of the user running the application,
or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Adobe Reader users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/acroread-8.1.3"

References
==========

[ 1 ] CVE-2008-2549
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2549
[ 2 ] CVE-2008-2992
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2992
[ 3 ] CVE-2008-4812
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4812
[ 4 ] CVE-2008-4813
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4813
[ 5 ] CVE-2008-4814
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4814
[ 6 ] CVE-2008-4815
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4815
[ 7 ] CVE-2008-4817
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4817

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200901-09.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5